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netfilter: netns nf_conntrack: per-netns conntrack accounting 

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Alexey Dobriyan 2008-10-08 11:35:09 +02:00 committed by Patrick McHardy
parent c2a2c7e0cc
commit d716a4dfbb
4 changed files with 84 additions and 38 deletions
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10
include/net/netfilter/nf_conntrack_acct.h
View File

@ -8,6 +8,7 @@
#ifndef _NF_CONNTRACK_ACCT_H
#define _NF_CONNTRACK_ACCT_H
#include <net/net_namespace.h>
#include <linux/netfilter/nf_conntrack_common.h>
#include <linux/netfilter/nf_conntrack_tuple_common.h>
#include <net/netfilter/nf_conntrack.h>
@ -18,8 +19,6 @@ struct nf_conn_counter {
u_int64_t bytes;
};
extern int nf_ct_acct;
static inline
struct nf_conn_counter *nf_conn_acct_find(const struct nf_conn *ct)
{
@ -29,9 +28,10 @@ struct nf_conn_counter *nf_conn_acct_find(const struct nf_conn *ct)
static inline
struct nf_conn_counter *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
{
struct net *net = nf_ct_net(ct);
struct nf_conn_counter *acct;
if (!nf_ct_acct)
if (!net->ct.sysctl_acct)
return NULL;
acct = nf_ct_ext_add(ct, NF_CT_EXT_ACCT, gfp);
@ -45,7 +45,7 @@ struct nf_conn_counter *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
extern unsigned int
seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir);
extern int nf_conntrack_acct_init(void);
extern void nf_conntrack_acct_fini(void);
extern int nf_conntrack_acct_init(struct net *net);
extern void nf_conntrack_acct_fini(struct net *net);
#endif /* _NF_CONNTRACK_ACCT_H */

2
include/net/netns/conntrack.h
View File

@ -17,10 +17,12 @@ struct netns_ct {
#ifdef CONFIG_NF_CONNTRACK_EVENTS
struct nf_conntrack_ecache *ecache;
#endif
int sysctl_acct;
int sysctl_checksum;
unsigned int sysctl_log_invalid; /* Log invalid packets */
#ifdef CONFIG_SYSCTL
struct ctl_table_header *sysctl_header;
struct ctl_table_header *acct_sysctl_header;
#endif
int hash_vmalloc;
int expect_vmalloc;

106
net/netfilter/nf_conntrack_acct.c
View File

@ -22,19 +22,17 @@
#define NF_CT_ACCT_DEFAULT 0
#endif
int nf_ct_acct __read_mostly = NF_CT_ACCT_DEFAULT;
EXPORT_SYMBOL_GPL(nf_ct_acct);
static int nf_ct_acct __read_mostly = NF_CT_ACCT_DEFAULT;
module_param_named(acct, nf_ct_acct, bool, 0644);
MODULE_PARM_DESC(acct, "Enable connection tracking flow accounting.");
#ifdef CONFIG_SYSCTL
static struct ctl_table_header *acct_sysctl_header;
static struct ctl_table acct_sysctl_table[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "nf_conntrack_acct",
.data = &nf_ct_acct,
.data = &init_net.ct.sysctl_acct,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = &proc_dointvec,
@ -64,41 +62,87 @@ static struct nf_ct_ext_type acct_extend __read_mostly = {
.id = NF_CT_EXT_ACCT,
};
int nf_conntrack_acct_init(void)
{
int ret;
#ifdef CONFIG_NF_CT_ACCT
printk(KERN_WARNING "CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Plase use\n");
printk(KERN_WARNING "nf_conntrack.acct=1 kernel paramater, acct=1 nf_conntrack module option or\n");
printk(KERN_WARNING "sysctl net.netfilter.nf_conntrack_acct=1 to enable it.\n");
#endif
ret = nf_ct_extend_register(&acct_extend);
if (ret < 0) {
printk(KERN_ERR "nf_conntrack_acct: Unable to register extension\n");
return ret;
}
#ifdef CONFIG_SYSCTL
acct_sysctl_header = register_sysctl_paths(nf_net_netfilter_sysctl_path,
acct_sysctl_table);
static int nf_conntrack_acct_init_sysctl(struct net *net)
{
struct ctl_table *table;
if (!acct_sysctl_header) {
nf_ct_extend_unregister(&acct_extend);
table = kmemdup(acct_sysctl_table, sizeof(acct_sysctl_table),
GFP_KERNEL);
if (!table)
goto out;
table[0].data = &net->ct.sysctl_acct;
net->ct.acct_sysctl_header = register_net_sysctl_table(net,
nf_net_netfilter_sysctl_path, table);
if (!net->ct.acct_sysctl_header) {
printk(KERN_ERR "nf_conntrack_acct: can't register to sysctl.\n");
return -ENOMEM;
goto out_register;
}
#endif
return 0;
out_register:
kfree(table);
out:
return -ENOMEM;
}
static void nf_conntrack_acct_fini_sysctl(struct net *net)
{
struct ctl_table *table;
table = net->ct.acct_sysctl_header->ctl_table_arg;
unregister_net_sysctl_table(net->ct.acct_sysctl_header);
kfree(table);
}
#else
static int nf_conntrack_acct_init_sysctl(struct net *net)
{
return 0;
}
void nf_conntrack_acct_fini(void)
static void nf_conntrack_acct_fini_sysctl(struct net *net)
{
#ifdef CONFIG_SYSCTL
unregister_sysctl_table(acct_sysctl_header);
#endif
nf_ct_extend_unregister(&acct_extend);
}
#endif
int nf_conntrack_acct_init(struct net *net)
{
int ret;
net->ct.sysctl_acct = nf_ct_acct;
if (net_eq(net, &init_net)) {
#ifdef CONFIG_NF_CT_ACCT
printk(KERN_WARNING "CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Plase use\n");
printk(KERN_WARNING "nf_conntrack.acct=1 kernel paramater, acct=1 nf_conntrack module option or\n");
printk(KERN_WARNING "sysctl net.netfilter.nf_conntrack_acct=1 to enable it.\n");
#endif
ret = nf_ct_extend_register(&acct_extend);
if (ret < 0) {
printk(KERN_ERR "nf_conntrack_acct: Unable to register extension\n");
goto out_extend_register;
}
}
ret = nf_conntrack_acct_init_sysctl(net);
if (ret < 0)
goto out_sysctl;
return 0;
out_sysctl:
if (net_eq(net, &init_net))
nf_ct_extend_unregister(&acct_extend);
out_extend_register:
return ret;
}
void nf_conntrack_acct_fini(struct net *net)
{
nf_conntrack_acct_fini_sysctl(net);
if (net_eq(net, &init_net))
nf_ct_extend_unregister(&acct_extend);
}

4
net/netfilter/nf_conntrack_core.c
View File

@ -1039,7 +1039,7 @@ void nf_conntrack_cleanup(struct net *net)
nf_ct_free_hashtable(net->ct.hash, net->ct.hash_vmalloc,
nf_conntrack_htable_size);
nf_conntrack_acct_fini();
nf_conntrack_acct_fini(net);
nf_conntrack_expect_fini(net);
free_percpu(net->ct.stat);
nf_conntrack_helper_fini();
@ -1191,7 +1191,7 @@ int nf_conntrack_init(struct net *net)
if (ret < 0)
goto out_fini_expect;
ret = nf_conntrack_acct_init();
ret = nf_conntrack_acct_init(net);
if (ret < 0)
goto out_fini_helper;